American Forests’ Tree Equity Pledge
Phoenix faces substantial challenges related to extreme heat, air quality, and social inequity (1-11). The Phoenix Tree Equity Pledge, launched in 2021, is a comprehensive city-wide initiative focused on addressing urban tree inequity and reducing the effects of extreme heat, especially in communities most vulnerable to these conditions (1-12). Partnering with American Forests, the country’s oldest conservation nonprofit, the initiative aims to achieve “tree equity” by 2030, ensuring all neighborhoods receive the benefits trees offer (1).
To reach this goal, the city will focus on enhancing tree coverage in underserved neighborhoods through the development of a Residential Tree Equity Accelerator, which plans to plant 20,000 trees across 25 neighborhoods by 2030 (1-12). By utilizing the Tree Equity Score developed by American Forests, the city can monitor progress, identify areas of need, and measure the impact of these projects (2-4, 9, 11).
To foster public engagement, the initiative will collaborate with residents, businesses, and local organizations to support tree-related projects, raise awareness of the benefits of trees, and promote tree stewardship (1, 4, 15). Additionally, the project aims to create green opportunities within the community by establishing supportive policies and regulations for tree planting and care and by creating pathways to green jobs (1, 7-9, 13-14). Recognizing that heat affects communities unequally, the Tree Equity Pledge seeks to increase canopy coverage in targeted neighborhoods, improving air quality, reducing the urban heat island effect, and enhancing overall community health (1, 7-9, 13-14).
To reach this goal, the city will focus on enhancing tree coverage in underserved neighborhoods through the development of a Residential Tree Equity Accelerator, which plans to plant 20,000 trees across 25 neighborhoods by 2030 (1-12). By utilizing the Tree Equity Score developed by American Forests, the city can monitor progress, identify areas of need, and measure the impact of these projects (2-4, 9, 11).
To foster public engagement, the initiative will collaborate with residents, businesses, and local organizations to support tree-related projects, raise awareness of the benefits of trees, and promote tree stewardship (1, 4, 15). Additionally, the project aims to create green opportunities within the community by establishing supportive policies and regulations for tree planting and care and by creating pathways to green jobs (1, 7-9, 13-14). Recognizing that heat affects communities unequally, the Tree Equity Pledge seeks to increase canopy coverage in targeted neighborhoods, improving air quality, reducing the urban heat island effect, and enhancing overall community health (1, 7-9, 13-14).
Elmwood Circle Forest
The Circle Forest project, led by Arboretum Detroit in partnership with Detroit Future City, is transforming a vacant lot the size of a football field in the Poletown East neighborhood into a green space. Once used as a dumping site, the area is being revitalized with 200 native trees, including oak, elderberry, white pine, and juniper. Supported by local groups like Detroit Audubon, Singing Tree, and the US Fish and Wildlife Service, the project aims to improve environmental quality and provide better access to nature for residents. Since 2019, over 120 trees have been planted, with plans to develop a native meadow. This initiative offers a space for recreation and reflection, benefiting the local community, including a nearby nursing home and rehabilitation center. Beyond ecological restoration, Circle Forest fosters connections to indigenous knowledge and respects the wisdom of the original stewards of the land. (Ref.1, 2)
Vertical Forest at CCB
The Bosque Vertical do Centro Cultural de Belém (CCB) in Lisbon (Vertical Forest at CCB), designed by Francisco Caldeira Cabral, is an innovative vertical garden inaugurated in 2020. Spanning two 17-meter-high walls with 7,524 plant pots, it enhances urban biodiversity by attracting birds and insects (Ref 3). This project offers recreational and aesthetic benefits, making the entrance of the cultural centre into a green space (Ref 4).
The garden helps reduce air pollution by absorbing pollutants and producing oxygen. It uses a drop-by-drop irrigation system made from recycled PVC, ensuring efficient water usage and retention (Ref 1). Furthermore, the garden improves air quality, aims to mitigate urban heat island effects, and conserves water (Ref 2, Ref 5).
The garden helps reduce air pollution by absorbing pollutants and producing oxygen. It uses a drop-by-drop irrigation system made from recycled PVC, ensuring efficient water usage and retention (Ref 1). Furthermore, the garden improves air quality, aims to mitigate urban heat island effects, and conserves water (Ref 2, Ref 5).
Green Lima
Lima Verde is one of the pillars of the metropolitan mayor's government plan and is supported by SERPAR. It aims to reforest hillsides, hills, and central berms of metropolitan and local roads, as well as public recreational spaces, to create urban lungs that generate oxygen and scenic beauty for the benefit of the health of all residents (Ref 1, 3). Its goal is to plant one million trees in four years (2022 - 2026) in different parts of North, East and South Lima (Ref 3, 5, 6). This project is being carried out to respond to the increasing problem of urban heat islands that are being generated, especially in the most vulnerable districts where there is no shade due to a shortage of trees (Ref 1, 4). It is therefore focused on areas where the environmental quality is low, where the pollution is high and where there is more danger of higher temperatures (Ref 1, 7).
This programme aims to include youth volunteers, district municipalities, educational institutions, grassroots social organisations, neighbourhood leaders, residents and other entities that favour environmental conservation (Ref 1, 2, 3, 5).
This programme aims to include youth volunteers, district municipalities, educational institutions, grassroots social organisations, neighbourhood leaders, residents and other entities that favour environmental conservation (Ref 1, 2, 3, 5).
Monsanto Forest Park's Management Plan
The Monsanto Forest Park Management Plan focuses on enhancing the Monsanto Forest Park as an urban ecosystem, thereby improving ecological health and biodiversity while promoting sustainable resource use and integration with urban areas. Key interventions include managing invasive species, preventing forest fires, and supporting native habitats. The plan also aims to improve recreational and educational facilities, reduce automobile traffic, and enhance public accessibility. It aims to cover conservation efforts, recreational use and urban integration as well as promoting the park as a model for sustainable urban forestry. The implementation is overseen by the Lisbon City Council. (Ref 1,4).
In 2021, this historic urban forest received the Forest Management Recertification under the Forest Stewardship Council®, "the most important global certification in terms of environmental compliance of forestry operations (Ref. 6).
In 2021, this historic urban forest received the Forest Management Recertification under the Forest Stewardship Council®, "the most important global certification in terms of environmental compliance of forestry operations (Ref. 6).
A wood for the city: the urban forest of Mount Urpinu
In the city of Cagliari, in the location of Mount Urpinu, 6400 new trees have been planted. The project, initiated in 2022, sought to restore the area's biodiversity and to revitalize the park for the benefits of the citizens (Refs. 1, 3 & 8). In fact, in previous years, the park has been subject to various environmental and social hazards because of its conditions: the area has been subject to wildfires and abandoned wastes, and with time, it became a gathering point for drug addicts and homeless people, thus becoming unsafe for citizens and especially for children (Refs. 1 & 6).
Therefore, the Metropolitan City of Cagliari decided to reclaim the area and plant thousands of trees of various species (holm oaks, oaks, pine, carob and olive trees) over more than 6 hectares of land (Refs. 3 & 8). The project's goal is to restore biodiversity, mitigate temperatures, decrease air pollution, and increase citizens' sense of community (Ref. 1).
Therefore, the Metropolitan City of Cagliari decided to reclaim the area and plant thousands of trees of various species (holm oaks, oaks, pine, carob and olive trees) over more than 6 hectares of land (Refs. 3 & 8). The project's goal is to restore biodiversity, mitigate temperatures, decrease air pollution, and increase citizens' sense of community (Ref. 1).
Kota Malang Urban Farming Programme
Kota Malang is a city for which urbanization coupled with climate change caused an increase in its vulnerability to the urban heat island effect. One of the solutions found to address this issue has been urban farming which has been recognised and acknowledged as a top strategy to improve cities' resilience associated with social and economic co-benefit. Nevertheless, urban farming inventory in Indonesia is still limited (1). Currently, there are 21 urban farming plots throughout Kota Malang, with 210 active urban farmers involved. The city has adopted this trend since 2013 as part of an initiative called Kawasan Rumah Pangan Lestari (Sustainable Food House Region) and the Initiative of Urban Farming Malang. Alongside the local government, the major stakeholder groups are the Department of Agriculture and Food Security of Malang, Family Welfare Empowerment (PKK) Malang and Bank Indonesia (BI) (Corporate Social Responsibility (CSR) program, which supports the local government in construction and development in Malang.
In Kota Malang, urban farming comprises five types of urban farming: nursery, allotment, residential, institutional and rooftop farming based on its characteristics (1). A recent report showed that urban farming could contribute to community resilience for feeding potential and nutrient sufficiency, especially for targeted populations with the highest risk during emergencies such as the COVID-19 pandemic. In the case of Kota Malang, the cultivation of specific vegetables could feed up to 50,000 inhabitants aged 60-64 years old (1, 2).
In Kota Malang, urban farming comprises five types of urban farming: nursery, allotment, residential, institutional and rooftop farming based on its characteristics (1). A recent report showed that urban farming could contribute to community resilience for feeding potential and nutrient sufficiency, especially for targeted populations with the highest risk during emergencies such as the COVID-19 pandemic. In the case of Kota Malang, the cultivation of specific vegetables could feed up to 50,000 inhabitants aged 60-64 years old (1, 2).
Rain Garden and Bioswales in Central Jakarta
Jakarta City in Indonesia deals with inundations during heavy rain periods (1,2). To overcome such flooding issues, the Central Jakarta City Government, through the Parks and Forests Sub-Department, planned and implemented four bioswales and one rain garden at five locations in Central Jakarta City (1,2,3,4). This project was aimed at saving groundwater through stormwater management and minimizing puddles around the site locations (1,4). The Head of Central Jakarta City Parks and Forests Sub-Department, Mila Ananda, conveyed this project completion in 2021 (1,2). After the successful implementation of this project, the Jakarta City Government further plans to identify similar more locations prone to inundation and implement such green infrastructure initiatives in other parts of the city (1,2,3).
Green Roof of Banyuwangi International Airport
Banyuwangi International Airport in East Java is the first green airport in Indonesia and was recognized with an award from the Aga Khan Award for Architecture (AKAA) in 2021-22, the world's oldest and most prestigious architecture awards (1,2,3,4). This project was designed and implemented by Architect Andra Matin in 2018 as a corporate social responsibility project for the Banyuwangi Regional Government, Java, Indonesia (1,2,4). The project building was extensively inspired by the houses of the local Osing tribe (1,2). The project aimed to embody a highly efficient passive design, with its remarking green roof feature of a total area of 4765m2 that is planted with grass and routinely maintained (1,2,3,5,6). The green roofs act like a sponge for heat, light and water and conserve energy by maintaining a constant temperature inside the building, and as a result, the airport does not require air conditioning in the main area (5). The green roof of the airport improves air quality as it captures airborne pollutants and atmospheric deposition, and the plants on green roofs also filter noxious gases (5). The eco-friendly airport terminal construction utilizes 'Fast Flow Siphonic System', especially for conventional roof drainage (5). The regional government declared a 10 km radius 'No Development Zone' around the project, protecting the existing paddy fields and villages, which is an exceptional move given the general tendency to exploit land around airports commercially (1,2). The current airport site caters to around 300,000 passengers annually and allows for future expansion to accommodate up to 3 million passengers without encroaching on the No Development Zone (2).
SM Sky Garden
The green roof development forms a 400-meter-long floating green ribbon above the SM North EDSA mall in Quezon City, Philippines. [3] It boasts a 15000m2 area filled with 55 species of native trees, bushes, and flowers that thrive in the local climate, and it relies on stored rainwater runoff to sustain its plant life. Visitors can access the mall via entrances located within the garden's openings and tunnels leading to shops and cafes nestled beneath the botanical landscape. A meandering pathway guides visitors through the space, which features various entertainment options. The garden provides a unique and innovative space for mall-goers and city dwellers to relax and interact with nature. [1,2]
